NEW YORK (Reuters) - Arista Networks Inc used rival Cisco Systems Inc's network device technology in its ethernet switches without permission, a U.S. trade judge ruled on Friday, handing Cisco yet another win in a sprawling legal battle over patents be...

NEW YORK (Reuters) – Arista Networks Inc used rival Cisco Systems Inc’s network device technology in its ethernet switches without permission, a U.S. trade judge ruled on Friday, handing Cisco yet another win in a sprawling legal battle over patents between the two companies.